The U.S. Navy's nuclear-powered attack submarine USS Greenville docked at the Busan Naval Operations Base on Tuesday, South Korean officials said.

A video of the attack on Novorossiysk with the Sub Sea Baby drone shows a calm port with several ships before a massive explosion kicks up water and debris.

We’ve examined satellite imagery of Novorossiysk, where Ukraine says it carried out an undersea drone attack on a Russian submarine on Monday. Imagery from 11 December, days before the attack, shows three submarines docked inside a quay, surrounded by several warships.

The Ukrainian military says it has blown up a $400m Russian submarine in an unprecedented attack on the Russian navy’s most important remaining Black Sea base located in Novorossiysk. The strike marks the first time an underwater drone has neutralised a submarine, according to President Volodymyr Zelensky ’s advisor Alexander Kamyshin.

Ukraine’s domestic security service, the SBU, said Monday that it had carried out an attack on a Russian submarine in the Black Sea port of Novorossiysk, causing critical damage to the vessel and effectively disabling it.

As it tried to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port.

The nuclear reactor of the fourth Suffren-class nuclear-powered attack submarine (SSN), De Grasse (S638), was fired up for the first time.

This story has been updated to correct that USS Oklahoma (SSN-802) does not have the Virginia Payload Module. Submarine builder General Dynamics Electric Boat delivered a Virginia-class attack boat to the U.

UK MoD officials have warned that mismanagement has left the nation unable to maintain its nuclear submarine programme

Once USS Barb reaches operational capacity with the Navy, the fast-attack sub will undoubtedly play a role in its sea power.